6601728387 has 8 divisors (see below), whose sum is σ = 9185013504. Its totient is φ = 4209797768.

The previous prime is 6601728383. The next prime is 6601728401. The reversal of 6601728387 is 7838271066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6601728387 - 2² = 6601728383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6601728383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47838543 + ... + 47838680.

It is an arithmetic number, because the mean of its divisors is an integer number (1148126688).

Almost surely, 2^6601728387 is an apocalyptic number.

6601728387 is a deficient number, since it is larger than the sum of its proper divisors (2583285117).

6601728387 is a wasteful number, since it uses less digits than its factorization.

6601728387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95677249.

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 6601728387 is about 81251.0208366640. The cubic root of 6601728387 is about 1875.9411819529.

The spelling of 6601728387 in words is "six billion, six hundred one million, seven hundred twenty-eight thousand, three hundred eighty-seven".